
package demon03d;

import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

public class App {

	public static void main(String[] args) {

		List<Integer> a = IntStream.builder().add(12).build().boxed().collect(Collectors.toList());

		System.out.println(a);
		System.out.println("hello world");
	}

}
